Both words in one sentence

Naomi Misora, who has been consistently shown to be intelligent, competent, meticulous, and above all, careful, foolishly tells Light her real name after giving him a pseudonym, when she has no more reason to trust him than before.

He points out that careful observation of Ambus' behavior throughout the book revealed, among other things, meticulous focus on order and procedure, an utter lack of mirth, and an immense distaste for filth and mess, as well as various quirks of speech tone and vocal pattern.